In the level where there is a group of shower areas, go to the left and just dodge the "syringe throwing" ghouls to get to the next door. You can stick around and shoot some of the ghouls to fill up you Insanity meter. Note: While running across the shower areas, do a "zigzag" pattern to avoid getting hit in the back. There will a fire blocking your way. Shoot the fire extinguisher to put out the fire.